56716668 has 18 divisors (see below), whose sum is σ = 143367224. Its totient is φ = 18905544.

The previous prime is 56716619. The next prime is 56716669. The reversal of 56716668 is 86661765.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56716669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 787696 + ... + 787767.

Almost surely, 2^56716668 is an apocalyptic number.

It is an amenable number.

56716668 is an abundant number, since it is smaller than the sum of its proper divisors (86650556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56716668 is a wasteful number, since it uses less digits than its factorization.

56716668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1575473 (or 1575468 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 56716668 is about 7531.0469391712. The cubic root of 56716668 is about 384.2113907702.

The spelling of 56716668 in words is "fifty-six million, seven hundred sixteen thousand, six hundred sixty-eight".